Add 12/90 and 21/15
1st number: 12/90, 2nd number: 1 6/15
12/90 + 21/15 is 23/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
12/90 = 12 × 1/90 × 1 = 12/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
21/15 = 21 × 6/15 × 6 = 126/90 - Add the two like fractions:
12/90 + 126/90 = 12 + 126/90 = 138/90 - 138/90 simplified gives 23/15
- So, 12/90 + 21/15 = 23/15
In mixed form: 18/15
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